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    Question

    If 'S' is the prime number 5, then find the fourth

    proportion of (S + 3), (S - 1) and (S + 7).
    A 5 Correct Answer Incorrect Answer
    B 4 Correct Answer Incorrect Answer
    C 8 Correct Answer Incorrect Answer
    D 6 Correct Answer Incorrect Answer

    Solution

    'S' = 5

    So, the numbers are 8, 4 and 12.

    Let fourth proportion be 'm'.

    So, 8m = 4 × 12

    Or, 8m = 48

    Or, 'm' = 6

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